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Individual Session Report: Visual Arrest

Individual session analysis of a subject performing a given task. This report outputs Power Spectral Density values in dB. Extreme power values (outliers) within each subject are removed using winsorization (the 10% smallest and 10% largest values are replaced, respectively, by the 10th and 90th percentiles of the data).

Table of Contents

  1. Analysis by Channels
    1. Power Spectra (Channels)
    2. BandPower (Channels)
    3. BandPower Bands / Ratios Topoplots (Channels)
  2. Analysis by Sources
    1. Power Spectra (Sources)
    2. BandPower (Sources)
    3. BandPower Ratios Cortex Plots (Sources) (Eyes Closed - Eyes Open)
  3. Connectivity Analysis

Analysis by Channels

Power Spectra (Channels)

This section contains the results of power spectral analysis for selected channels or cortical regions of interest. Power spectral density was estimated using the Welch method and 1/f normalized and converted to dB. Each trace shows the Mean +/- 95% confidence interval for the respective factor(s).
Power Spectra
Power Spectra Eyes Closed - Eyes Open

BandPower (Channels)

This section shows bar plots of the mean bandpower + ratios for selected channels or cortical regions of interest. Error bars denote the Mean +/- 95% confidence interval. Power spectral density was estimated using the Welch method and 1/f normalized and converted to dB.
Band Power - Bands (Channels)
Band Power - Bands (Channels) (Eyes Closed - Eyes Open)
Band Power - Ratios (Channels)
Band Power - Ratios (Channels) (Eyes Closed - Eyes Open)

BandPower Bands / Ratios Topoplots (Channels)

This section shows topographic plots of bandpower and bandpower ratios by channel. Colormaps are auto-scaled by column for comparison.
Band Power (Channels)
Band Power Ratios (Channels)

Analysis by Sources

Power Spectra (Sources)

This section contains the results of power spectral analysis for selected channels or cortical regions of interest. Power spectral density was estimated using the Welch method and 1/f normalized and converted to dB. Each trace shows the Mean +/- 95% confidence interval for the respective factor(s).
Power Spectra
Power Spectra Eyes Closed - Eyes Open

BandPower (Sources)

This section shows bar plots of the mean bandpower + ratios for selected channels or cortical regions of interest. Error bars denote the Mean +/- 95% confidence interval. Power spectral density was estimated using the Welch method and 1/f normalized and converted to dB.
Band Power - Bands (Sources)
Band Power - Bands (Sources) (Eyes Closed - Eyes Open)
Band Power - Ratios (Sources)
Band Power - Ratios (Sources) (Eyes Closed - Eyes Open)

BandPower Ratios Cortex Plots (Sources) (Eyes Closed - Eyes Open)

The following plots show the bandpower ratios computed for all ROIs and mapped onto a 3D cortex. The leftmost column shows the entire cortext, while the two columns on the right show the two hemispheres of the cortex (allowing a view of the inner side of the cortex). Clicking the "Atlas" button will show a color map of the regions, with the name of the region displayed when hovered over.
Power Band Ratio: theta/alpha, for Eyes Closed - Eyes Open
Power Band Ratio: beta/theta+alpha, for Eyes Closed - Eyes Open
Power Band Ratio: theta/beta, for Eyes Closed - Eyes Open

Connectivity Analysis

This section contains Connectogram plots showing effective connectivity (a multivariate Granger Causality measure) between selected cortical regions of interest following sLORETA source localization. The connectivity was computed within a 2-second sliding window and averaged over time as well as within each of five canonical frequency bands (delta, theta, alpha, beta, and gamma). For each of the following connectogram plots, the connectivity between two ROIs is rendered as a “ribbon” connecting two regions on the circle. Hovering over the endpoint of a ribbon reveals the effective connectivity value. The width of each connectivity “ribbon” at an endpoint indicates the proportional magnitude of the respective connectivity value relative to all other outgoing connections for that ROI. The color of ribbon denotes the directionality of the flow: If the connectivity from ROI A -> ROI B is greater than from ROI B -> ROI A then the ribbon will be colored the same as ROI A.
Multivariate Granger Causality Connectivity